<?php
/**
 * Einstellungen: Reiter Design und Einstellungen, feste Feldliste.
 *
 * @package ThreeRB
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Lesen und Bereinigen der Option threerb_settings.
 */
final class ThreeRB_Settings {

	const OPTION = 'threerb_settings';

	/**
	 * Werkseinstellungen.
	 *
	 * @return array
	 */
	public static function defaults() {
		return array(
			'post_types'   => array( 'post', 'page' ),
			'display'      => 'bars',
			'style'        => 'theme',
			'night_accent' => '#8b7cf6',
			'accent'       => '',
			'star_color'   => '#f5b301',
			'radius'       => 10,
			'heading'      => 'h3',
			'half_stars'   => false,
			'summary_top'  => false,
			'words'        => true,
			'author'       => 'person',
			'position'     => 'bottom',
			'scale'        => 'p10',
			'step'         => 0.1,
			'delete_data'  => false,
		);
	}

	/**
	 * Aktuelle Einstellungen, ergänzt um Vorgaben.
	 *
	 * @return array
	 */
	public static function get() {
		$gespeichert = get_option( self::OPTION, array() );
		return self::clean( is_array( $gespeichert ) ? $gespeichert : array() );
	}

	/**
	 * Einzelner Wert.
	 *
	 * @param string $key Schlüssel.
	 * @return mixed
	 */
	public static function value( $key ) {
		$alle = self::get();
		return isset( $alle[ $key ] ) ? $alle[ $key ] : null;
	}

	/**
	 * Bereinigt Eingaben mit fester Feldliste.
	 *
	 * @param array $roh Eingabe.
	 * @return array
	 */
	public static function clean( $roh ) {
		$roh      = is_array( $roh ) ? $roh : array();
		$v        = self::defaults();
		$erlaubte = array_values( get_post_types( array( 'public' => true ), 'names' ) );
		if ( isset( $roh['post_types'] ) && is_array( $roh['post_types'] ) ) {
			$typen = array();
			foreach ( $roh['post_types'] as $typ ) {
				$typ = sanitize_key( $typ );
				if ( in_array( $typ, $erlaubte, true ) && 'attachment' !== $typ ) {
					$typen[] = $typ;
				}
			}
			$v['post_types'] = array_values( array_unique( $typen ) );
		}
		if ( isset( $roh['display'] ) && in_array( $roh['display'], array( 'bars', 'stars', 'profile' ), true ) ) {
			$v['display'] = $roh['display'];
		}
		if ( isset( $roh['style'] ) && in_array( $roh['style'], array( 'theme', 'night' ), true ) ) {
			$v['style'] = $roh['style'];
		}
		if ( isset( $roh['night_accent'] ) && preg_match( '/^#[0-9a-fA-F]{6}$/', (string) $roh['night_accent'] ) ) {
			$v['night_accent'] = strtolower( $roh['night_accent'] );
		}
		if ( isset( $roh['accent'] ) && ( '' === $roh['accent'] || preg_match( '/^#[0-9a-fA-F]{6}$/', (string) $roh['accent'] ) ) ) {
			$v['accent'] = strtolower( (string) $roh['accent'] );
		}
		if ( isset( $roh['star_color'] ) && preg_match( '/^#[0-9a-fA-F]{6}$/', (string) $roh['star_color'] ) ) {
			$v['star_color'] = strtolower( $roh['star_color'] );
		}
		if ( isset( $roh['radius'] ) && is_scalar( $roh['radius'] ) && preg_match( '/^\d{1,2}$/', (string) $roh['radius'] ) && (int) $roh['radius'] <= 24 ) {
			$v['radius'] = (int) $roh['radius'];
		}
		if ( isset( $roh['heading'] ) && in_array( $roh['heading'], array( 'h2', 'h3', 'h4' ), true ) ) {
			$v['heading'] = $roh['heading'];
		}
		foreach ( array( 'half_stars', 'summary_top' ) as $schalter ) {
			if ( array_key_exists( $schalter, $roh ) ) {
				$v[ $schalter ] = self::bool( $roh[ $schalter ] );
			}
		}
		if ( array_key_exists( 'words', $roh ) ) {
			$v['words'] = self::bool( $roh['words'] );
		}
		if ( isset( $roh['position'] ) && in_array( $roh['position'], array( 'bottom', 'manual' ), true ) ) {
			$v['position'] = $roh['position'];
		}
		if ( isset( $roh['author'] ) && in_array( $roh['author'], array( 'person', 'organization' ), true ) ) {
			$v['author'] = $roh['author'];
		}
		if ( isset( $roh['scale'] ) && null !== ThreeRB_Score::max( $roh['scale'] ) ) {
			$v['scale'] = $roh['scale'];
		}
		if ( isset( $roh['step'] ) && is_numeric( $roh['step'] ) && in_array( (float) $roh['step'], ThreeRB_Score::scales()[ $v['scale'] ]['steps'], true ) ) {
			$v['step'] = (float) $roh['step'];
		} elseif ( ! in_array( (float) $v['step'], ThreeRB_Score::scales()[ $v['scale'] ]['steps'], true ) ) {
			$v['step'] = ThreeRB_Score::scales()[ $v['scale'] ]['steps'][0];
		}
		if ( array_key_exists( 'delete_data', $roh ) ) {
			$v['delete_data'] = self::bool( $roh['delete_data'] );
		}
		return $v;
	}

	/**
	 * Boolean ausdrücklich lesen: „false“, „0“, leer und „off“ sind falsch.
	 *
	 * @param mixed $wert Wert.
	 * @return bool
	 */
	public static function bool( $wert ) {
		if ( is_bool( $wert ) ) {
			return $wert;
		}
		if ( is_int( $wert ) ) {
			return 1 === $wert;
		}
		return in_array( strtolower( trim( (string) $wert ) ), array( '1', 'true', 'on', 'yes' ), true );
	}
}